22-bit Digital PC Desktop Seismic Recorder
Model DAS-6102-PC






The DAS-6102-PC is a high-performance, versatile 22-bit resolution digital seismic PC desktop recording system

The standard system is configured for 4-channels. Optional configurations include configurations up to 32 channels. All channels operate synchronously up to 2,000 samples per second.

A standard 10Gb removable hard disk is included, with optional disk capacities to to 32Gb. Data is retrieved by removal of the PC compatible compact hard drive, or via LAN (Ethernet card optional).

The DAS-6102 includes a GPS receiver and antenna and "Smart Timing" software, allowing the user to select the timing accuracy, which will automatically control and minimize the GPS cycling times. The monitor provides real time viewing of up to 3 waveforms.

The system is suitable for central site recording of analog telemetry networks, teaching aplications, and public viewing.


FEATURES
  • 22-bit high resolution
  • 112B dynamic range
  • operates in both trigger and continuous mode
  • Multiple trigger passband pre-filters
  • High accuracy GPS timing
  • Large PC compatible removable hard disk
  • PC monitor
  • PC keyboard
  • Real time waveform display
  • 4 to 32 channels
  • Analog and digital alias filtering
SPECIFICATIONS
INPUT CHANNELS
Type: Differential or Single-Ended
Data Channels: 4 optional up to 32 channels.
State-of-Health 4th Channel: Standard: 22-bit resolution
Gain: Software programmable: 1,2,4,8
Single Ended Input Range, Software programmable: 2.5 Optional Differential Input
Dynamic Range: >112 dB @ 200 sps
(rms to full scale)
Analog Anti-Aliasing Filter: >90 dB @ primary sampling rate
Input Impedance Data inputs: 2.5V - 1Mohm
Overvoltage Protection 40 V
DIGITIZER
Type: 22-bit delta-sigma converter in each channel (570 kHz)
Sampling Rates: 1, 10, 20, 40, 80, 100, 200, 500, 1000, 2000 sps
Digital Filter Built-in DSP-based digital filter
Phase Linear within the passband
TIMING SYSTEM
Type: True Real Time PLL controlled, GPS-referenced
Maximum Accuracy : <1msec, (Software Selectable)
HOW TO ORDER Crystal Oscillator Standard: 25ppm; Optional TCXO 1 ppm/year
Basic DAS-6102-PC Configuration The standard configuration includes 4 channels, 10Gb hard drive, and GPS antenna/receiver.
Channel Configuration

option -8CH, -12CH, -16CH, -20CH, -24CH, -32CH

Removable 12Gb, 20Gb, or 30Gb Drives option -xxGb (specify capacity, must turn power off to remove)
LAN option option -LAN
Sensor Options EP-300 Broadband,
EP-105 Broadband,
SP-400 Medium Period Seismometer,
R-1 Rotational Seismometer
Supplies and Accessories PC removable disk frame
Hard Disk (specify capacity)
General Spares GPS antenna/receiver
   





S Printer Friendly Format For Specifications

GPS Duty Cycle : Once every 18 hrs to achieve <1msec accuracy, (Software Selectable)
EVENT DETECTORS
Type: STA/LTA, Level, up to 5 independent detectors in frequency domain
Trigger Pre-filter Up to 5 trigger passbands
Pre-event data buffer Up to 90 seconds (@100 sps)
Post-event buffer User configured - no limitations
Trigger channels May be controlled by one, several or all 5 detectors associated with any physical or virtual acquisition channel
Calibration 5V square wave (others optional)
Calibration Duration User selectable
POWER
Voltage: 110 VAC
USER INTERFACE
Display Type: SVGA monitor, optional flat secreen
Full PC keyboard Standard
User Control: Menu-driven; state-of-health messaging
Data display: Up to 3 channels simultaneously in real time
MASS STORAGE
Hard Disk 10Gb standard, optional to 32Gb
Disk/File Compatibility: Any PC
Data Formats: Mini-SEED w/Steim-2 compression up to x6 CSS 3.0: long integer; separate data description in ASCII
COMMUNICATION
Dial-up Telephone Line Access RS232 com2 port; internal modem; Automatic PC dial up communication software included
Ethernet Optional LAN card
ENVIRONMENTAL PARAMETERS
Housing PC Desktop
Size Configuration dependant
Weight Configuration dependant
CONNECTORS: REAR PANEL
Data DB-16
LAN or serial port Standard PC
GPS DB-9
 

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